EP1744042A1 - Method to regenerate a particulate filter - Google Patents
Method to regenerate a particulate filter Download PDFInfo
- Publication number
- EP1744042A1 EP1744042A1 EP05106289A EP05106289A EP1744042A1 EP 1744042 A1 EP1744042 A1 EP 1744042A1 EP 05106289 A EP05106289 A EP 05106289A EP 05106289 A EP05106289 A EP 05106289A EP 1744042 A1 EP1744042 A1 EP 1744042A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- particulate filter
- diesel
- exhaust gas
- filter
- mass flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 55
- 238000011069 regeneration method Methods 0.000 claims abstract description 45
- 230000008929 regeneration Effects 0.000 claims abstract description 36
- 239000004071 soot Substances 0.000 claims abstract description 16
- 230000000977 initiatory effect Effects 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 239000000446 fuel Substances 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 16
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 15
- 230000003247 decreasing effect Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/08—Introducing corrections for particular operating conditions for idling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
- F02D41/405—Multiple injections with post injections
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The Invention relates to a Method to regenerate a particulate filter, in particular a Diesel paticulate filter (DPF), whereby the particulate filter is arranged in an exhaust passage for receiving an exhaust gas from an internal combustion engine, in particular from a Diesel engine, whereby the particulate filter traps particulates contained in the exhaust gas, so that soot is collected inside the particulate filter. The method comprises the steps of (i) initiating an ignition of soot inside the particulate filter, and (ii) actuating a reduction of the exhaust gas mass flow through the filter, preferentially together with increasing concentration of oxygen in the exhaust gas, for example by means of using engine operating conditions with lighter load, whereby the steps (i) and (ii) can be repeated several times with a determined frequency so that a desired degree of filter regeneration is achieved.
Description
- The Invention relates to a Method to regenerate a particulate filter, in particular a Diesel paticulate filter (DPF), whereby the particulate filter is arranged in an exhaust passage for receiving an exhaust gas from an internal combustion engine, in particular from a Diesel engine, whereby the particulate filter traps particulates included in the exhaust gas, so that soot is collected inside the particulate filter.
- Methods to regenerate particulate filters, in particular Diesel particulate filters are known in prior art.
- The
EP 0 528 289 B1 relates to a device for removing particulates in the exhaust gas of a diesel engine. The device comprises a filter arranged in an exhaust line for receiving the exhaust gas from the diesel engine, the filter being capable of trapping particulates included in the exhaust gas. The device further comprises heating means arranged adjacent to the filter for generating heat in the filter. Further air supplying means for supplyng air into the filter for incinerating the particulates , and control means for controlling an amount of air flow for obtaining a desired incineration performance of the particulates trapped in the filter are comprised by the device. The control means comprises detecting means for detecting the amount of residual unburnt particulates upon the incineration process, and air flow amount control means responsive to the detected amount of residual unburnt particulates for controlling the amount of the air flow used in the subsequent incineration process. - The
EP 0 528 289 B1 discloses a device for purifying particulates in the exhaust gas of a diesel engine, whereby the control means comprises effective area detecting means for detecting the value of the effective area of the filter before commencement of trapping of the particulates by the filter, and determining means for determining the amount of the air to be introduced into the filter in the subsequent incineration process in accordance with the detected value of the effective area. - The
EP 0 528 289 B1 describes that during a filter regeneration the periphery of the filter may not be regenerated completely, leading to a more and more clogged filter after regeneration. In order to regenerate the DPF additional hardware is used. In theEP 0 528 289 B1 it is disclosed, that in the centre of the filter a temperature of 900°C is to be achieved, so that in the periphery a temperature of 500°C is achieved. These high temperature gradients will certainly decrease filter life time, and limit the soot load, which in turn will lead to the requirement of more frequent regenerations and hence a larger fuel consumption. - The additional hardware, like for example the heating device, the secondary air system, including an air pump adds hardware costs, takes up package space and uses a lot of energy, leading to a high operating cost.
- Further disadvantage of the
EP 0 528 289 is to be seen in the fact, that a by-pass valve is used in order to lead exhaust gases to the environment without passing through the filter, which will lead to emissions of particulates during all the time when the by-pass is activated. - Although the
EP 0 528 289 B1 uses pressure difference measurements for determining the amount of soot present in the filter, no information is available on the axial distribution of the soot after a (partial) regeneration. - Therefore the objective of the present invention is to provide a better method to regenerate a particulate filter which achieves a complete and fast, preferentially in a short time, regeneration of the particulate filter, thus saving energy, leading to a low fuel penalty for a driver of a vehicle without using additional hardware so that extra hardware costs, package space and total vehicle mass is saved leading to a more robust design.
- The objective is solved by the steps: Initiating an ignition of soot inside the particulate filter, and actuating a reduction of the exhaust gas mass flow through the filter, whereby the a.m. steps are repeated several times with a determined frequency so that a desired degree of filter regeneration is achieved.
- Initiating an ignition of soot inside a filter can be performed by increasing temperature of the filter utilizing in-cylinder combustion using multiple injections, and/or by increasing engine speed and/or load, and/or by using post-cylinder fuel or other combustible compound injection/addition into the post-combustion gases and burning this combustible compound over an oxidation catalyst placed in the exhaust gas passage between combustion chamber(s) and (diesel) particulate filter, or over an active catalyst deposited onto the (diesel) particulate filter material.
- To detect the initiation of soot combustion inside a filter, monitoring means such as measurements of the exhaust gas mass flow, fuel consumption, exhaust gas and internal filter temperatures, exhaust gas backpressure, can be applied.
- In a first embodiment reducing the exhaust gas mass flow through the filter, preferentially together with increasing concentration of oxygen in the exhaust gas, can be done by means of switching the engine into conditions providing lower mass flow and/or higher oxygen content (for example idling), if necessary ― together with decreasing amount of fuel added for heating a particulate filter.
- In a second embodiment reducing the exhaust gas mass flow through the filter, preferentially together with increasing concentration of oxygen in the exhaust gas, can be done by means of activating valve(s) allowing only a controllable portion of the exhaust gas to pass through the filter, while the rest of the exhaust gas to by-pass the filter, if necessary - together with decreasing amount of fuel added for heating a particulate filter.
- In a third embodiment reducing the exhaust gas mass flow through the filter, preferentially together with increasing concentration of oxygen in the exhaust gas, can be done by means of activating a system that separately supplies air and/or exhaust gas to the filter at flow rate and with oxidant content that are sufficient to maintain the filter regeneration.
- In the following some examples of results by using the inventional method are shown. The used abbreviations in the respective tables are defined as:
SL, g/L- Soot loading, gram/liter, DPF- Diesel Particulate Filter, SiC- silicon carbide (filter material) 5.66"D x 6" L- DPF diameter (D) and length (L) in inches, 200 cpsi- number of cells per square inch, - Example 1 a shows versus example 1 b (Table 1), that initiating regeneration during 2 min of post-injecting, followed by decreasing gas flow through a filter together with cutting off fuelling results in high regeneration efficiency (96%); while without decreasing gas flow and without cutting fuelling off, similar regeneration efficiency can be achieved only after 10 min of post injection causing higher fuel consumption compared to 1a.
Table 1 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 1 a DPF#1 Catalysed SiC filter; 5,66"D x 6"L; 200cpsi 8.5 123 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 96 1 b DPF#1 Catalysed SiC filter; 5,66"D x 6"L; 200cpsi 7.5 300" Exhaust gas; 600°C upstream of the filter continuously during 15 min with post-injection, mass flow of 90+/-10 kg/hr 55% -*- 600" 90% -*- 900" 100% - Example 1a shows versus example 1c (Table 2), that initiating regeneration during 2 min of post-injecting, followed by decreasing gas flow through a filter results in high regeneration efficiency (96%); with cutting fuelling off but without decreasing gas flow, regeneration efficiency is much lower (only 27%).
Table 2 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 1 a DPF#1 Catalysed SiC filter; 5,66"D x 6"L; 200cpsi 8.5 123 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 96 1c DPF#1 Catalysed SiC filter; 5,66"D x 6"L; 200cpsi 7.6 123 Exhaust gas; before and after cutting post- injection, mass flow of 90+/-10 kg/hr 27 - Examples 2a and 2b (Table 3) show that according to the method of the present invention, either exhaust gas, or air can be used for efficient regeneration of a particulate filter.
Table 3 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 2a DPF#2 Catalysed SiC filter; 5,66"D x 6"L; 300cpsi 6.3 119 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 69.5 2b DPF#2 Catalysed SiC filter; 5,66"D x 6"L; 300cpsi 6.7 115 After cutting post-injection, air with mass flow of 30+/-20 kg/hr 71.1 - Examples 3a-3e (Table 4) show that the method of the present invention is applicable to un-catalysed filters
Table 4 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 3a DPF#3 Uncoated SiC; 5,66"D x 6"L; 200 cpsi 3.40 172 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 94.0 3b -"- -"- 5.40 175 -"- 90.9 3c -"- -"- 8.43 130 -"- 74.3 3d -"- -"- 11.30 123 -"- 65.9 3e -"- -"- 12.69 121 -"- 67.7 - Examples 4a-4g (Table 5) show that the method of the present invention is applicable to processes in which regeneration is assisted by fuel borne additive.
Table 5 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 4a DPF#4 Uncoated SiC X00 cpsi; 5,66"D x 10"L; Ce-Fe fuel borne additive assisted regeneration 3.95 126 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 90.8 4b -"- -"- 5.02 70 -"- 98.1 4c -"- -"- 5.77 84 -"- 93.3 4d -"- -"- 7.98 40 -"- 97.3 4e -"- -"- 9.70 66 -"- 95.8 4f -"- -"- 11.45 70 -"- 96.0 4g -"- -"- 14.12 51 96.0 - Examples 5a-5d (Table 6) show that the method of the present invention is applicable to the catalysed DPF prepared on the silicon carbide 200 cpsi DPF support (6"-long filter).
Table 6 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 5a DPF #5 Catalysed SiC filter; 5,66"D x 6"L; 200cpsi 4.6 116 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 45.5 5b -"- -"- 5.8 156 -"- 100 5c -"- -"- 8.5 157 -"- 97.6 5d -"- -"- 9.7 147 -"- 93.6 - Examples 6a-6g (Table 7) show that the method of the present invention is applicable to the longer catalysed filters; in this case, results for DPF prepared on the silicon carbide 300 cpsi DPF support are shown (10"-long filter).
Table 7 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 6a DPF #6 Catalysed SiC filter; 5,66"D x 10"L; 300cpsi 3.7 101 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 50.0 6b -"- -"- 5.2 117 -"- 68.2 6c -"- -"- 5.7 156 -"- 88.1 6d -"- -"- 7.0 173 -"- 100 6e -"- -"- 7.8 117 -"- 79.6 6f -"- -"- 9.0 101 -"- 91.4 6g -"- -"- 10.2 96 -"- 100 - Examples 7a-7g (Table 8) show that the method of the present invention is applicable to even much longer catalysed filters; in this case, results for DPF prepared on the silicon carbide 300 cpsi DPF support are shown (14"-long filter).
Table 8 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 7a DPF #7 Catalysed SiC filter; 5,66"D x 14"L; 300cpsi 4.2 96 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 61.3 7b -"- -"- 4.9 100 -"- 45.7 7c -"- -"- 6.2 104 -"- 48.1 7d -"- -"- 6.5 139 -"- 89.5 7e -"- -"- 7.6 136 -"- 92.1 7f -"- -"- 8.7 129 -"- 95.7 7g -"- -"- 9.6 115 -"- 99.1 - Examples 8a-8d (Table 9) show that the method of the present invention is applicable to the catalysed DPF prepared on the refractory oxide (cordierite) 300 cpsi DPF support (6"-long filter).
Table 9 Ex. No. Particulate Filter Description SL, g/L Duration of post injection, s Regeneration method and media Regeneration efficiency, % mass 8a DPF #8 Catalysed SiC filter; 5,66"D x 6"L; 300cpsi 2.0 116 Exhaust gas; after cutting post-injection, mass flow of 30+/-20 kg/hr 81.3 8b -"- -"- 3.8 133 -"- 66.7 8c -"- -"- 6.2 99 -"- 88.2 8d -"- -"- 7.5 97 -"- 94.0 - As the above examples show, each regeneration carried out via the inventional method provides nearly complete regeneration of the particulate filter. Mainly insulated particulate filters and particulate filters with a high thermal conductivity are used, so that radial temperature profiles are reduced. The reduced radial temperature profiles lead advantageously to an increased particulate filter lifetime and hence a smaller fuel consumption.
- Advantageously only an engine calibration is required, which can be fully controlled by a known motor management system, so that no extra package space and hardware costs is used. Even the energy required for heating the particulate filter is reduced.
- Because of the fact, that the exhaust gases in the preferred embodiment pass through the particulate filter at every time, even during regeneration, emissions to the environment are reduced.
- With the inventional method a complete and fast regeneration of the particulate filter is achieved, thus saving energy, leading to a low fuel penalty for the driver. The complete regeneration can be achieved within a short time, saving extra hardware costs, saving package space and total vehicle mass, leading to a more robust design since the method is implemented fully in the motor management system.
- The preferred embodiment of the invention includes, after initiating particulate regeneration inside the filter, putting the engine into low mass-flow and/or higher oxygen content conditions to support regeneration without any other means such as secondary air supply, external heater, additional valves, pipes or by-passes.
Claims (10)
- Method to regenerate a particulate filter, in particular a Diesel paticulate filter (DPF), whereby the particulate filter is arranged in an exhaust passage for receiving an exhaust gas from an internal combustion engine, in particular from a Diesel engine, whereby the particulate filter traps particulates included in the exhaust gas, so that soot is collected inside the particulate filter
characterized by
the steps of (i) initiating an ignition of soot inside the particulate filter, and (ii) actuating a reduction of the exhaust gas mass flow through the filter, whereby the steps (i) and (ii) can be repeated several times with a determined frequency so that a desired degree of filter regeneration is achieved. - Method according to claim 1,
characterized in, that
the initiating of the ignition of soot inside the (diesel) particulate filter is performed by increasing temperature of the (diesel) particulate filter by in-cylinder combustion with multiple post injections. - Method according to claim 1 or 2,
characterized in, that
the initiating of the ignition of soot inside the (diesel) particulate filter is performed by increasing temperature of the (diesel) particulate filter by increasing engine speed and/or load. - Method according to one of the preceding claims,
characterized in, that
the initiating of the ignition of soot inside the (diesel) particulate filter is performed by increasing temperature of the (diesel) particulate filter by combustible compound injection into post combustion gases and burning the said combustible compound over an oxidation catalyst placed in the exhaust gas passage between combustion chamber(s) and the (diesel) particulate filter. - Method according to claim 4,
characterized in, that
the combustible compound preferably is normal fuel. - Method according to one of the preceding claims,
characterized by
monitoring means in order to detect the initiation of soot combustion inside the (diesel) particulate filter. - Method according to one of the preceding claims,
characterized in, that
the exhaust gas mass flow through the (diesel) particulate filter is reduced preferentially with increasing concentration of oxygen in the exhaust gas, by means of switching the engine into conditions providing lower mass flow. - Method according to one of the preceding claims,
characterized in, that
the exhaust gas mass flow through the (diesel) particulate filter is reduced preferentially with increasing concentration of oxygen in the exhaust gas, by means of switching the engine into conditions providing higher oxygen content. - Method according to one of the preceding claims,
characterized in, that
the exhaust gas mass flow through the (diesel) particulate filter is reduced preferentially with increasing concentration of oxygen in the exhaust gas, by means of activating a system that separately supplies air to the (diesel) particulate filter at flow rate and with oxidant content that are sufficient to maintain the (diesel) particulate filter regeneration. - Method according to one of the preceding claims,
characterized in, that
the exhaust gas mass flow through the (diesel) particulate filter is reduced preferentially with increasing concentration of oxygen in the exhaust gas, by means of activating a system that separately supplies exhaust gas to the (diesel) particulate filter at flow rate and with oxidant content that are sufficient to maintain the (diesel) particulate filter regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20050106289 EP1744042B1 (en) | 2005-07-11 | 2005-07-11 | Method to regenerate a particulate filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20050106289 EP1744042B1 (en) | 2005-07-11 | 2005-07-11 | Method to regenerate a particulate filter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1744042A1 true EP1744042A1 (en) | 2007-01-17 |
| EP1744042A9 EP1744042A9 (en) | 2007-03-28 |
| EP1744042B1 EP1744042B1 (en) | 2012-02-22 |
Family
ID=35406249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20050106289 Expired - Fee Related EP1744042B1 (en) | 2005-07-11 | 2005-07-11 | Method to regenerate a particulate filter |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1744042B1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2925598A1 (en) * | 2007-12-21 | 2009-06-26 | Renault Sas | METHOD FOR POST PROCESSING OF EXHAUST GASES OF A COMBUSTION ENGINE |
| US8061127B2 (en) | 2008-04-29 | 2011-11-22 | Cummins, Inc. | Thermal management of diesel particulate filter regeneration events |
| WO2012030274A1 (en) * | 2010-08-31 | 2012-03-08 | Scania Cv Ab | Method and system for controlling the mass flow during regeneration of a particle filter in a post-treatment system of a combustion engine |
| US8171726B2 (en) | 2006-12-22 | 2012-05-08 | Cummins Inc. | Software, methods and systems including soot loading metrics |
| US8499550B2 (en) | 2008-05-20 | 2013-08-06 | Cummins Ip, Inc. | Apparatus, system, and method for controlling particulate accumulation on an engine filter during engine idling |
| DE102017108442A1 (en) | 2016-04-29 | 2017-11-02 | Ford Global Technologies, Llc | A method of reducing the heating of a particulate filter during a regeneration event |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205647A1 (en) * | 2000-11-03 | 2002-05-15 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Method for regenerating the particulate filter of a Diesel engine |
| EP1245814A2 (en) * | 2001-03-27 | 2002-10-02 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Exhaust emission control system of internal combustion engine |
| US20030089102A1 (en) * | 2001-11-13 | 2003-05-15 | Peugeot Citroen Automobiles Sa | System for aiding the regeneration of pollution-control means that are integrated in an exhaust line of a motor vehicle engine |
| WO2004042206A1 (en) * | 2002-11-05 | 2004-05-21 | Volvo Lastvagnar Ab | Method for cleaning a particle filter and a vehicle for utilizing said method |
| US20050072141A1 (en) * | 2001-04-19 | 2005-04-07 | Yasuhisa Kitahara | Exhaust gas purification apparatus for internal combustion engine and method thereof |
| EP1541837A1 (en) * | 2003-12-08 | 2005-06-15 | Nissan Motor Co., Ltd. | Regeneration method and control of diesel particulate filter |
-
2005
- 2005-07-11 EP EP20050106289 patent/EP1744042B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205647A1 (en) * | 2000-11-03 | 2002-05-15 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Method for regenerating the particulate filter of a Diesel engine |
| EP1245814A2 (en) * | 2001-03-27 | 2002-10-02 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Exhaust emission control system of internal combustion engine |
| US20050072141A1 (en) * | 2001-04-19 | 2005-04-07 | Yasuhisa Kitahara | Exhaust gas purification apparatus for internal combustion engine and method thereof |
| US20030089102A1 (en) * | 2001-11-13 | 2003-05-15 | Peugeot Citroen Automobiles Sa | System for aiding the regeneration of pollution-control means that are integrated in an exhaust line of a motor vehicle engine |
| WO2004042206A1 (en) * | 2002-11-05 | 2004-05-21 | Volvo Lastvagnar Ab | Method for cleaning a particle filter and a vehicle for utilizing said method |
| EP1541837A1 (en) * | 2003-12-08 | 2005-06-15 | Nissan Motor Co., Ltd. | Regeneration method and control of diesel particulate filter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8171726B2 (en) | 2006-12-22 | 2012-05-08 | Cummins Inc. | Software, methods and systems including soot loading metrics |
| FR2925598A1 (en) * | 2007-12-21 | 2009-06-26 | Renault Sas | METHOD FOR POST PROCESSING OF EXHAUST GASES OF A COMBUSTION ENGINE |
| WO2009083415A1 (en) * | 2007-12-21 | 2009-07-09 | Renault S.A.S | Method for post-processing exhaust gases of a combustion engine |
| US8061127B2 (en) | 2008-04-29 | 2011-11-22 | Cummins, Inc. | Thermal management of diesel particulate filter regeneration events |
| US8499550B2 (en) | 2008-05-20 | 2013-08-06 | Cummins Ip, Inc. | Apparatus, system, and method for controlling particulate accumulation on an engine filter during engine idling |
| WO2012030274A1 (en) * | 2010-08-31 | 2012-03-08 | Scania Cv Ab | Method and system for controlling the mass flow during regeneration of a particle filter in a post-treatment system of a combustion engine |
| EP2611998A4 (en) * | 2010-08-31 | 2017-03-08 | Scania CV AB | Method and system for controlling the mass flow during regeneration of a particle filter in a post-treatment system of a combustion engine |
| DE102017108442A1 (en) | 2016-04-29 | 2017-11-02 | Ford Global Technologies, Llc | A method of reducing the heating of a particulate filter during a regeneration event |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1744042A9 (en) | 2007-03-28 |
| EP1744042B1 (en) | 2012-02-22 |
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